What H2LT is
H2LT stands for Hair Hyperstimulation Laser Therapy. It is Dr Sin Yong's own low-level laser protocol, and he applies it himself, zone by zone.
It uses laser systems with calibrated fluence. The light is red, at around 630 to 670 nm, and at low power. The aim is to reach the dermal papilla at the base of the follicle.
How H2LT hair loss laser treatment sessions in Singapore run
Who it may suit
Early androgenetic alopecia, described as Grade I to III, with surviving follicles. The laser needs living follicles to act on, so this is checked at the start.
Chronic telogen effluvium, including shedding after childbirth. Bloods are checked first, because a treatable cause may be driving the shedding.
People who cannot take medicine, or prefer not to. H2LT is drug-free, though you should discuss what you give up by avoiding medicine.
Used around native hair after transplantation. A transplant is carried out elsewhere and does not stop thinning in the surrounding hair.
Who should wait or not have it
Suitability is assessed individually.
Active scalp infection, open wounds or an inflamed scalp.
Any suspicious scalp lesion is examined first, because a light treatment must not delay a diagnosis.
Photosensitising medicines or conditions are reviewed first.
Low iron, thyroid disease and other medical or nutritional causes need attention first. Laser will not correct them.
Where H2LT fits in a wider plan
| Layer | Role |
|---|---|
| Oral or topical medicine | Addresses the medical side of pattern loss |
| Luminescence Laser | A non-ablative 1540 nm laser, which may be considered for significant androgenetic alopecia |
| H2LT | A low-level, non-drug layer |
| Topical exosome application | May be combined in clinic |
| Derive Serum and Nourkin TricoVerde | Home serum and nutritional supplementation |
| Regular review | Decides what continues, what stops and what is added |
What H2LT cannot do
H2LT cannot regrow a follicle that has already been lost. It cannot treat scarring alopecia. It does not block DHT, so where medicine is advised, it does not stand in for it. Scarring alopecia and sudden patchy loss are referred to a dermatologist. Late-stage loss with few surviving follicles is referred for surgical assessment. Shedding may also continue while an underlying cause is being corrected, so an early lack of change does not always mean failure. No result is promised, and response varies between individuals. Avoid thinking of laser as the only step. For significant androgenetic alopecia, the Luminescence Laser may be considered and medicine is usually discussed too. H2LT is then one layer in that plan.
What the evidence does and does not say
Low-level laser therapy has been studied. These studies looked at low-level laser in general. They were not studies of H2LT as a protocol. So they help explain why pattern thinning is the main use, but they cannot tell you how your scalp will respond. That is why review with a doctor matters more than any headline figure. It is also why the treatment is kept within a plan and not offered as a cure.
Risks and side effects
Mild warmth or scalp tightness during treatment.
Temporary redness, tenderness, headache or dryness.
This may go on while an underlying cause is corrected.
Blistering or a burn-like reaction, spreading redness or signs of infection, persistent headache, dizziness or eye discomfort, or sudden patchy loss. See complication care.
Sessions, reviews and aftercare
The session count is planned individually at consultation. So are spacing, maintenance, the use of other treatments and how often blood tests are repeated. Please judge change over months, because hair grows in slow cycles. Afterwards, wash gently if the scalp feels tender and avoid scratching. Wear a hat for sun protection, and bring in new scalp products only when advised. No length of effect can be promised, so ask at each review whether continuing still makes sense for you. Treatment is performed by Dr Sin Yong, who adjusts the time spent on each zone. Maintenance is not assumed. It is discussed at review, in light of how your hair has changed. Blood tests may be repeated at intervals that are agreed with you, and any deficiency found is dealt with alongside the laser. If nothing has changed after a fair trial, it is reasonable to ask whether to stop.
Questions to bring to your consultation
Laser only makes sense once this is known. Patchy, sudden or scarring loss takes a different route.
If you can take it, ask how much of your plan depends on it. If you cannot, ask what that may mean for you.
Agree on how progress will be judged and when, so you are not relying on memory.
No length of effect can be promised. Ask how maintenance would be decided in your case.
How the fee is set
No price is set beforehand. The fee depends on the zones treated, the number of passes, the device and consumables used, and whether H2LT is combined with other treatment. You receive a written quote after examination. Read how we quote, or see the hair loss treatment overview. That consultation may also conclude that H2LT is not advised, or that something else should happen first, such as correcting low iron. Please bring any recent blood results and a list of what you use on your scalp.